The most important thing that homeowners care about when choosing insulation materials for their homes is whether the rock wool insulation material contains asbestos. It is said that in the past, asbestos was used everywhere and later was found to threaten human health severely.Please, rest assured that the answer is clear: modern rock wool insulation materials produced in a regular manner do not contain asbestos.

Why does not rock wool contain asbestos?

They are entirely different in composition: the main raw materials of rock wool are natural minerals, including basalt and diabase, and a small amount of slag. These are melted at a high temperature and then turned into fibers by centrifugal force. Asbestos is a kind of natural silicate mineral fiber. In terms of raw materials, there is an essential difference between the two.

Production processes differ: Rock wool is produced as a synthetic mineral fiber, whereas asbestos is a natural mineral mined and processed directly. Asbestos can never be included in the production process of rock wool.

Historical links and contemporary criteria

People have this question because asbestos was extensively used in earlier times due to its fireproof and heat-insulating ability. With deepening scientific research, asbestos fibers have been confirmed to be strong carcinogens; most countries in the world, including China, strictly prohibit or limit their use in the construction field. Today, all kinds of rock wool products are made in strict accordance with the relevant national and international environmental protection and safety standards; therefore, as an insulation material, it is safe, efficient, and environmentally friendly. It contains no asbestos and enjoys excellent fire-resistance, sound insulation, and heat preservation performance. 

Conclusion

When purchasing rock wool products, as long as you choose brand products with good reputation and in compliance with national standards such as GB/T,such as our U-ROCKPAN and U-ROCKROL series, you can fully ensure that they do not contain asbestos and can be used safely in insulation and soundproofing projects both for households and commercial buildings. You don't need to worry about this.